Can Collaboration Services synchronize the SIP:address found in the ProxyAddresses of a published object?
No, QCS will only sync the primary SMTP address(es) in ProxyAddress and filter out all other addresses from ProxyAddresses of source object.
STATUS
Enhancement Request TF00237434 has been submitted to Development for consideration in a future release of Collaboration Services.
Please Note: Collaboration Services does not provide any way for two Skype for Business/Lync Organizations to communicate with one another. Collaboration Services can sync the msRTCSIP-PrimaryUserAddress and other SIP AD attributes when creating or editing a publication. This is done from the "Select Attributes" screen under "Add Attributes". However, the publishing and subscribing Domains must have these attributes enabled. The attributes are enabled automatically when the Active Directory Schema is extended when Lync or OCS is installed. NOTE - If you are using the User to Contact mapper this feature will not allow the additional attributes to be synchronized. This is a limitation of the mapper it is hard coded to only use the default attribute set.
